Gemini 3.1 Flash TTS API

Gemini 3.1 Flash TTS is a text-to-speech model by Google, available on the Venice API as tts-gemini-3-1-flash. Requests are anonymized, so the provider never sees your identity.

Gemini 3.1 Flash TTS API pricing

Model ID	Variant	Privacy	Price
`tts-gemini-3-1-flash`	Standard	Anonymized	$187.50 per 1M characters

Gemini 3.1 Flash TTS specifications

Spec	Value
Provider	Google
Released	Apr 20, 2026
Privacy	Anonymized
Voices	30
Formats	mp3, opus, wav

How to use the Gemini 3.1 Flash TTS API

Send requests to POST https://api.venice.ai/api/v1/audio/speech with "model": "tts-gemini-3-1-flash" and your API key.

curl https://api.venice.ai/api/v1/audio/speech \
  -H "Authorization: Bearer $VENICE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "tts-gemini-3-1-flash",
    "input": "Private AI for everyone.",
    "voice": "Achernar",
    "response_format": "mp3"
  }' --output speech.mp3

Gemini 3.1 Flash TTS API FAQ

How much does the Gemini 3.1 Flash TTS API cost?

188 per 1M characters of input text, about

0.15 per minute of generated speech. Prices are in USD and can be paid in DIEM at parity.

What is the Gemini 3.1 Flash TTS model ID?

Use tts-gemini-3-1-flash as the model parameter.

Is the Gemini 3.1 Flash TTS API private?

Gemini 3.1 Flash TTS is anonymized: Venice forwards requests to the provider without your identity, but the provider may retain prompt data, so use a private model for sensitive work.

How many voices does Gemini 3.1 Flash TTS have?

30 voices, for example Achernar, Achird, Algenib. Output formats: mp3, opus, wav.

Which endpoint does the Gemini 3.1 Flash TTS API use?

Call POST /audio/speech.

Related models

MiniMax Speech-02 HD API: $125.00 per 1M characters
ElevenLabs Multilingual v2 API: $115.00 per 1M characters
ElevenLabs TTS v3 API: $115.00 per 1M characters
Qwen 3 TTS 1.7B API: $112.50 per 1M characters

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